Surface Anatomy of Mandibular First Premolar
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Questions and Answers

Which aspect is not mentioned in the description of the mandibular first premolar?

  • Incisal (correct)
  • Buccal
  • Occlusal
  • Lingual

What is the characteristic feature of the mandibular first premolar in terms of the number of cusps?

  • Double cusp (correct)
  • Triple cusp
  • Quadruple cusp
  • Single cusp

At what age does the crown of the mandibular first premolar complete its eruption?

  • 10-12 years (correct)
  • 10-11 years
  • 1.5 - 2 years
  • 2 - 2.5 years

What is the geometric outline of the facial and lingual surfaces of the mandibular first premolar?

<p>Trapezoidal (B)</p> Signup and view all the answers

Which part of the mandibular first premolar has a nearly concave mesial and distal outline?

<p>Contact areas (C)</p> Signup and view all the answers

What is the shape of the geometric outline of the facial and lingual aspects in all teeth?

<p>Trapezoid, shorter cervically and longer incisally/occlusally (B)</p> Signup and view all the answers

In which teeth are the geometric outline of the proximal aspects rhomboid in shape with the distal aspect being shorter occlusally and longer cervically?

<p>Lower posterior teeth (A)</p> Signup and view all the answers

What is the characteristic feature seen in the lower 4 teeth on the occlusal surface?

<p>Mesiolingual developmental groove (C)</p> Signup and view all the answers

What type of convergence is prominent in both crown and root on the lingual surface?

<p>Lingual convergence (D)</p> Signup and view all the answers

What characterizes the lingual outline from the cervical line to the cusp tip?

<p>Convex with maximum convexity at the mesial 1/3 (A)</p> Signup and view all the answers

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